"R.A. Cantrell" <[EMAIL PROTECTED]> wrote:
> What's the difference between these 8500 boards? One is an >820-0564-09 TNT Motherboard VAL-4 the other is an 820-0752-A. Is one >"better" than the other? I am going to assemble my 8500 project and have >these two (and more) boards to choose from? >-- And Jeff Walther added: <<But the printed circuit boards (7x00 vs 8500) would probably have the same identifier silk screened on them. All of the above mentioned machines use the same printed circuit board. The only difference is a couple extra chips installed on the 8500 assembly line. So I don't think TNT vs. Nitro markings on the PCB would be definitive because whether a given PCB would become a TNT or a Nitro was probably an accident of which box got stacked where, long after the silk screening was applied to the boards.>> But would the P/N for the 8500 and 7500 be the same given there are different chips on the both boards? I have several 7500's the P/N on the one I bought new (way back then) is the same, 820-0564-09 TNT VAL-4. So I would assume R.A. has one of the infamous VAL-4 boards from a 7500. This is just an assumption. As far as the VAL-4 problems I believe the original VAL-4 motherboard was ultimately identified as the common thread for L2 cache problems. Only Apple's cache seemed to work reliably in the original VAL-4 boards according to some sources. In my experience I have had no problems with the board running an XLR8 466 MHz/1GB G3 with 512 MB interleaved RAM --glen (digest mode) -- PCI-PowerMacs is sponsored by <http://lowendmac.com/> and... Small Dog Electronics http://www.smalldog.com | Refurbished Drives | -- Sonnet & PowerLogix Upgrades - start at $169 | & CDRWs on Sale! | Support Low End Mac <http://lowendmac.com/lists/support.html> PCI-PowerMacs list info: <http://lowendmac.com/lists/pci-powermacs.shtml> --> AOL users, remove "mailto:"; Send list messages to: <mailto:[EMAIL PROTECTED]> To unsubscribe, email: <mailto:[EMAIL PROTECTED]> For digest mode, email: <mailto:[EMAIL PROTECTED]> Subscription questions: <mailto:[EMAIL PROTECTED]> Archive:<http://www.mail-archive.com/pci-powermacs%40mail.maclaunch.com/> Using a Mac? Free email & more at Applelinks! http://www.applelinks.com
